Electrothermal film with 16-double edge sealStructure improvement of 17-microcrystal electrothermal film heating plate18-far infrared heating plate19-A hot line20-Electric heating film radiation convection wall heating-21-safe electrothermal film with high electrothermal conversion rate22-convection floor heating system23-jet convection heater24-metal foil resistive electrothermal film25-heat storage electric heater26-cable splitter27-Electric heater28-electrothermal tile module29-electrothermal carpet30-electrothermal floor tile